A lot of the surgeons I work with here have leather messenger bags and as far as I know none are gay. I never even think of that, I know they have a lot of stuff to carry, especially the ones who take residents. We are pretty East Coast here, though not as fashion savvy as NYC.
Haha, I work at a hospital too and it's so easy to identify the surgeons, especially plastic surgeons! They all have greased back hair and those black leather messenger/laptop cases! My friends and I joke about it all the time, we call it their cult and say this is how they find their own kind in the big crowds! And when they all get together for meetings they discuss their hair and their bags!
I actually have one of those black leather messenger cases for my laptop too but I don't take my laptop out much so I don't really use it. They're heavy though, even without the computer in it.